Fire safety is very different in Jerusalem where the buildings are made of stone. The buildings in Telz were wood.
I’m under the impression that building fires are not considered a threat in Israel the way they are in America.
Once in yeshiva, there was an electric heater that had a stuck fan and watch “breathing fire” on friday night. So I turned it off. The next day, I asked one of the rebbeim who said I should not have done so. He said that in Israel we should have just let it burn, since the building was stone and concrete and when the heater finished burning, it would just go out.